Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: a) 4/23 + 15/21 – 1 4/23 + 0, 75 + 6/21 b) 14/25 + 27/13 + 11/25 – 14/13

Toán Lớp 7: a) 4/23 + 15/21 – 1 4/23 + 0, 75 + 6/21
b) 14/25 + 27/13 + 11/25 – 14/13

Comments ( 2 )

  1. a) 4/23 + 15/21 – 1 4/23 + 0, 75 + 6/21
    =(4/23-1 4/23)+(15/21+6/21)+0,75
    =(-1)+1+0,75
    =0+0,75=0,75
    b) 14/25 + 27/13 + 11/25 – 14/13 
    =(14/25+11/25)+(27/13-14/13)
    =1+1=2

  2. a)
    4/23 + 15/21 – 1 4/23 + 0, 75 + 6/21
    = ( 4/23 – 1 4/23 ) + ( 15/21 + 6/21 ) + 0,75
    = ( -1 ) + 1 + 0,75
    = 0 + 0,75
    = 0,75
    b)
    14/25 + 27/13 + 11/25 – 14/13
    = ( 14/25 + 11/25 ) + ( 27/13 – 14/13 )
    = 1 + 1
    = 2
     

Leave a reply

222-9+11+12:2*14+14 = ? ( )

About Thảo